Vulcanizing device



July?, 11925.

LMSSS R. s. BURDETTE VULCANI Z ING DEVI CE Filed Jah. 6F 1922 PatentedJuly 7, 1925.

UNITED STATES 1,545,033 PATENT oFFlcE.

RICHARD S. BURDETTE, F AKRON, OHIO, ASSIGNOR TO THE GOODYEAR TIRE &RUBBER COMPANY, OFYAKRON, OHIO, A CORPORATION OF OHIO.

'VULCANIZIN'G- DEVICE.

Application med January c, 1922. serial No. 527,350.

To all whom it may Gomera:

Be it known that I, RICHARD S. BURDrn'rE,

a citizen of the United States, residin at Akron, in the county ofSummit and tate of Ohio, have invented new and useful Improvements inVulcanizing Devices, of which the following is a specification.

This invention relates to vulcanizing de` vices for use in repairingarticles that embody rubber, .or rubber composition, for instance, suchas tires, hose, or other articles possessing similar structuralcharacteristics.

In order to exemplify its use andronstruction, I have elected toillustrate and de- 15. scribe its applicability in the art of repairingpunctures in tire casings for which operation it is specically adapted.

It is common practice, in repairing punctures in tire casings, tovulcanize a plug, or insert, that is formed of rubber composition intheorifice constitutin the puncture. It is, however, extremely di cult, ifnot impossible under present practices, to distribute the heatthroughout the plug or insert in such manner that the walls of theorifice, which, of course are already vulcanized, are not overcureddurin vulcanization of the plug, as will be readily understood withoutfurther explanation.

The present invention has been designed with the foregoin problem inview and, therefore, contemp ates as a primary consideration, theprovision of a device adapted to vinsure roper vulcanization of a plugorinsert without' injuriously alfecting the surrounding of the wall ofthe orifice by overvulcanization.

It is also an object of the invention to so apply the heat that it willbe diffused uniformly throughout that area of the plug adjacent the wallof the orificel and to secure a consistent expansion, particularly ofthis area against the walls of the orifice, to thereattain a properadhesion between theb *5 plug and the wall during vulcanization.

Other objects, such as ease of operation, and simplicit of construction,will appear when the fol owin description is read in conjunction with te accompanying drawin s in which;

ig. 1 is a fragmentary sectional view of a portion of a tire casingillustrating the v vention in side elevation and its applicatlon inrepairing a puncture;

Fig. 21s a similar view showing the invention 1n transverse sections;and

Fig. 3'is a top plan view of the invention.

Referring to thev drawings by characters o f reference, the numeral 1designates a portion of a tire casing, of ordinary construction, whichhas been cored, las at 2, to receive a conventional form of plug 3, and4 designates, as a whole, my improved device for vulcanizing the plug 1nthe casing. The device 4 comprises, generally speaklng, a head portion 5and a shank or hollow nipple portion 6, and is designed to be positionedrelative to the plug 3 in substantially the manner illustrated in thedrawings, that is to say, with the shank or nipple portion 6 inserted inthe plug 3 ina position axially thereof. To permit of its being sopositioned, the end of the shank or nipple 6 is tapered or rounded as at7. In actual practlce, the nipple may be positioned in the plug 3either-before or after the plug has been inserted in the punctureorifice. The device 5 may be formed in any suitable manner butpreferably it comprises a disk like flange 8 carrying the aforesaidshank or nipple 6, which is capped by a similarly shaped plate 9removably fastened thereto through the medium of screws 10. The ange 8and the plate 9 are respectively provided with diametrical channels` 10and 11 which are designed to register when the device is assembled toform a bore 12 that is in communication with a similar bore 13 in thehollow shank `orfnipple 6. v

The bore 13 in the aforesaid nipple 6 is provided for the purpose ofintroducing a vulcanizing medium into the nipple, such as steam or hotwater, or any other suitable medium. I prefer, in this instance, toutilize steam and to introduce it within the nipple or shank in the formof a jet. To this end I provide an angulated nozzle 14 of substantiallythe injector type, which is designed to be partly contained within thechannels 13 and partly within the bore 12. The nozzle 14 may also beconstructed in any suitable manner but, in this' instance comprises aninlet portion 15, and an outlet portion 16,

the latter portion being tapered, as will be seen by reference lto Fig.2. Any suitable means for connecting' the nozzle to a source of steamsupply may be provided such, for instance, as the threaded nipple 17?.-Preferably, a collar 18 is also provided adjacent the nipple 17 in orderthat the portion 16 of the nozzle may be accurately centered in the bore13 of the nipple or shank 6. As best shown in Fig. 2, that portion ofthe nozzle 14, that is contained in the bore 13, is smaller at itslargest portion than the bore in order that the steam may exhaust intothe free portion of the bore provided by the channels 10 and 11 and fromthere into the atmosphere. Preferably, although not necessarily, Iintel-pose a washer 19 between the head member 5 and the casing in orderto insulate them one from the other. Also, I prefer to utilize a washer2O between the members 8 and 9 of the head member 4.

The operation of the device, it is believed, will be obvious from theforegoing and it will also be apparent that by admitting the continuousstream of the heating fluid into the aforesaid nipple, that an idealmedium is provided in the practice of this invention for uniformlyvdistributing the heat necessary to vulcanization throughout the plug.After the vulcanization operation has been completed, the device may bereadily withdrawn from the plug and the opening left by the nipple 6 maybe filled in any suitable manner such, for instance, as by tirel putty,cement, o r the like.

While I have described my invention in detail and, therefore,.utilizedcertain specific language, it is to be understood that the presentdisclosure is merely illustrative and is not designed in any way tolimit the scope or spirit of the invention unless such limita- -tionsare indicated in the claims appended hereto.

The method of closing an opening in a rubber product is claimed in acopending application Serial No. 2293 filed Jan. 14, 1925.

What I claim is: Y

1. A device adapted for heating vulcanizable material with a heatingfluid comprising a body portion for receiving fluid under pressure, asecond portion adapted to be embedded in the material, said portionsbeing respectively chambered, and an injector nozzle arranged toestablish communication between the respective chambers.

2. A device adapted for treating valcanizable material comprising achambered body portion for receiving fluid under4 pressure, a chamberednipple arranged in angular relation to the body portion and adapted tobe embedded in the material, and an langulated injector nozzle having aportion arranged Within the chamber of said nipple.

Y 3. A device for treating vulcanizing material comprising a bodyportion adapted to receive fluid under pressure, said portion havinganinlet opening and au exhaust opening, a second portion arranged at anangle to said first portion provided with a chamber communicating withthe exhaust opening, and an injector nozzle arranged to establishcommunication between the inlet opening and the chamber.

4. A device for treating vulcanizable material comprising a disc-shapedmember provided with a diametrical slot in one face thereof, an axiallydisposed chambered nipple projecting from the opposite face of the discadapted to be embedded in the material, an angulated injector nozzlehaving a tapered portion disposed in the chamber of the nipple, and acap member adapted to be removably secured over the slotted face of thedisc to retain the nozzle in place.

5'. A device for treating vulcanizable'material comprising a disc-shapedmember provided with a diametrical slot in one face thereof, an axiallydisposed chambered nipple projecting from the opposite face of the disc,a cap disc also having a diametrical groove in one face thereof adaptedto be removably secured over the slotted face of the member with itsslot in alignment with the slot in said member, and an angulatedinjector nozzle comprising a straight portior adapted to be clampedbetween the membei and the cap in the slots thereof, said nozzleincluding a tapered portion projecting in the chamber of the nipple.

In witness whereof I have hereunto signed my name in the presence of twosubscribing witnesses.

RICHARD S. BURDETTE. Witnesses: W. J. MCDANEL,

L. M. HARTMAN.

